CN114031697A - Acid coagulation preparation method of medical latex gloves - Google Patents
Acid coagulation preparation method of medical latex gloves Download PDFInfo
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- CN114031697A CN114031697A CN202111347247.7A CN202111347247A CN114031697A CN 114031697 A CN114031697 A CN 114031697A CN 202111347247 A CN202111347247 A CN 202111347247A CN 114031697 A CN114031697 A CN 114031697A
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- latex gloves
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- 229920000126 latex Polymers 0.000 title claims abstract description 144
- 239000004816 latex Substances 0.000 title claims abstract description 144
- 230000015271 coagulation Effects 0.000 title claims abstract description 75
- 238000005345 coagulation Methods 0.000 title claims abstract description 75
- 239000002253 acid Substances 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000003381 stabilizer Substances 0.000 claims abstract description 13
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 12
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 11
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 8
- 239000003086 colorant Substances 0.000 claims abstract description 8
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 6
- -1 siloxane compound Chemical class 0.000 claims abstract description 6
- 150000003839 salts Chemical class 0.000 claims abstract description 4
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical class [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 3
- 235000010290 biphenyl Nutrition 0.000 claims abstract description 3
- 239000004305 biphenyl Substances 0.000 claims abstract description 3
- 125000006267 biphenyl group Chemical group 0.000 claims abstract description 3
- MGNCLNQXLYJVJD-UHFFFAOYSA-N cyanuric chloride Chemical compound ClC1=NC(Cl)=NC(Cl)=N1 MGNCLNQXLYJVJD-UHFFFAOYSA-N 0.000 claims abstract description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 3
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims description 42
- 238000002788 crimping Methods 0.000 claims description 21
- 238000002791 soaking Methods 0.000 claims description 21
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 16
- 239000000919 ceramic Substances 0.000 claims description 15
- 238000005406 washing Methods 0.000 claims description 14
- 239000002270 dispersing agent Substances 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 9
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 9
- 235000019253 formic acid Nutrition 0.000 claims description 9
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims description 9
- 239000000645 desinfectant Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 238000007865 diluting Methods 0.000 claims description 6
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- 229940037312 stearamide Drugs 0.000 claims description 2
- 239000013530 defoamer Substances 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 238000000197 pyrolysis Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 7
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 5
- 239000000693 micelle Substances 0.000 description 4
- 239000000701 coagulant Substances 0.000 description 3
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Inorganic materials [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- 229920003211 cis-1,4-polyisoprene Polymers 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C1/00—Treatment of rubber latex
- C08C1/14—Coagulation
- C08C1/15—Coagulation characterised by the coagulants used
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/0055—Plastic or rubber gloves
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/02—Direct processing of dispersions, e.g. latex, to articles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2309/02—Copolymers with acrylonitrile
- C08J2309/04—Latex
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Dispersion Chemistry (AREA)
- Textile Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Gloves (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses an acid coagulation preparation method of medical latex gloves, which comprises the following raw materials in parts by weight: 20-40 parts of nitrile rubber, 20-30 parts of water, 3-8 parts of acid coagulation liquid, 2-8 parts of a release agent, 4-9 parts of a stabilizer, 6-10 parts of a defoaming agent, 3-8 parts of an anti-aging agent and 1-3 parts of a coloring agent, wherein the ratio of the release agent to the components is 2-8: 3-7 of methyl silicone oil and siloxane compound, wherein the stabilizer is prepared by mixing 3-6: 1-5 of organic antimony and lead salt, wherein the defoaming agent is prepared from the following components in parts by weight: 3-6 of trialkyl melamine and cyanuric chloride melamine, wherein the anti-aging agent is prepared by mixing the following components in a ratio of 1-4: 3-6 diphenyl and p-phenylenediamine are mixed to get worth, the invention carries on the solidification to the latex glove through replacing the method of the traditional practical coagulator, but use acid coagulation liquid to make the latex glove solidify, the effective medical glove products that avoid the metal salt ion to coagulate and harden, easy pyrolysis, low intensity, apt to have defects, etc. disadvantage caused.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to an acid coagulation preparation method of medical latex gloves.
Background
At present, materials used for preparing the medical gloves are mainly natural latex, artificially synthesized rubber, PVC and the like, and some enterprises and research and development institutions begin to try to prepare the medical gloves by using polyurethane as a raw material; the natural latex is polyisoprene produced from hevea trees, wherein the cis-1, 4-polyisoprene content is as high as 99 percent, which endows the natural rubber with excellent flexibility and skin-friendly property, and the natural latex medical gloves are still the mainstream products in the market although the natural latex products have peculiar smell and sensitization;
the medical gloves are mostly prepared by adopting a coagulant coagulation method, and the currently used coagulant is divalent or trivalent metal salt, such as anhydrous calcium chloride and calcium nitrate. However, divalent or trivalent metal ions are condensed into polyvalent metal ions to generate complex crosslinking with hydrophilic ions on the surfaces of micelles in natural latex, synthetic rubber or other synthetic materials, so that the stability of the micelles is damaged and the micelles are solidified, and the solidification method can cause the solidified product to be hard, the fusion of micelle particles is poor, the strength is low, defects are easy to occur, and medical workers cannot be well protected.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides an acid coagulation preparation method of medical latex gloves.
The invention provides an acid coagulation preparation method of medical latex gloves, which comprises the following raw materials in parts by weight: 20-40 parts of nitrile rubber, 20-30 parts of water, 3-8 parts of acid coagulation liquid, 2-8 parts of a release agent, 4-9 parts of a stabilizer, 6-10 parts of a defoaming agent, 3-8 parts of an anti-aging agent and 1-3 parts of a coloring agent.
Preferably, the release agent is prepared from the following components in a ratio of 2-8: 3-7 of methyl silicone oil and siloxane compound, wherein the stabilizer is prepared by mixing 3-6: 1-5 organic antimony and lead salt.
Preferably, the ratio of the defoaming agent is 4-8: 3-6 of trialkyl melamine and cyanuric chloride melamine, wherein the anti-aging agent is prepared by mixing the following components in a ratio of 1-4: 3-6 diphenyl and p-phenylenediamine.
Preferably, the ratio of the acid coagulation liquid is 3-10: 2-4: 4-8: 1-3 of formic acid, acrylic acid, hypochlorous acid and a dispersing agent.
Preferably, the proportion of the dispersant is 2-4: 1-3 stearamide and higher alcohol.
Preferably, the method comprises the following steps:
s1: preparing raw materials, namely preparing the raw materials into latex;
s2: washing the mould, namely washing the mould of the medical latex glove;
s3: drying the mould, namely drying the cleaned mould at the temperature of 70-100 ℃;
s4: soaking latex, namely soaking the dried mould in latex solution of the medical latex glove to enable the surface of the ceramic mould to be covered with a layer of latex to form the latex glove;
s5: dipping the acid coagulation liquid, vertically inserting the latex gloves dipped with the latex into the acid coagulation liquid;
s6: crimping, namely crimping the opening of the latex glove formed on the die in the step S5 by a crimping device;
s7: drying and vulcanizing;
s8: water cooling, namely soaking the latex gloves obtained in the step S9 in cold water for cooling;
s9: drying, namely drying the latex gloves cooled by water in the step S7 to remove surface moisture at the temperature of 50-80 ℃;
s10: and (4) demolding, namely taking the latex gloves off the ceramic mold, and then packaging to finish the production of the medical latex gloves.
Preferably, the acid coagulation liquid in the step S5 is prepared by stirring formic acid, acrylic acid, hypochlorous acid and a dispersing agent in a stirrer at the rotation speed of 230-300 rpm for 20-60 min, and adding water for dilution as required.
Preferably, the acid coagulation liquid dipped in step S5 is repeatedly and vertically fed into the acid coagulation liquid pool so that the acid coagulation liquid is uniformly attached to the unformed latex glove.
Preferably, the drying and vulcanizing treatment in the S7 step is carried out at the temperature of 180-250 ℃ and the pressure is controlled to be 10-20 MPa.
Preferably, the temperature of the water cooling in the step S8 is 18-25 degrees celsius, and the water can be replaced by disinfectant or soapy water.
The invention has the beneficial effects that: the defoaming agent is added into the latex, so that bubbles in the latex can be eliminated, the quality of the latex is improved, and the yield of the latex gloves is indirectly increased;
by adding the dispersing agent into the acid coagulation liquid, the dispersing agent has the function of reducing the time required by the acid coagulation liquid raw material to complete the dispersing process and saving the time for preparing the acid coagulation liquid;
the release agent is coated on the glove mold, so that the latex gloves are prevented from being adhered to a ceramic hand, the demolding is convenient, and meanwhile, the latex gloves cannot be torn during demolding to cause defective products;
the anti-aging agent is added, so that the service life of the latex gloves can be prolonged;
by adding the stabilizer, the stabilizer can increase the stability of each auxiliary agent in the latex;
by adding the acid coagulation liquid, the defects of hard coagulation, easy thermal decomposition, low strength, easy defect and the like of the medical glove product caused by the coagulation of metal salt ions are effectively avoided;
the invention carries out the solidification on the latex gloves by replacing the traditional practical coagulant method, but uses the acid coagulation liquid to solidify the latex gloves, thereby effectively avoiding the defects of hard coagulation, easy thermal decomposition, low strength, easy defect and the like of medical glove products caused by the coagulation of metal salt ions.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example one
The embodiment provides an acid coagulation preparation method of medical latex gloves, which comprises the following raw materials in parts by weight: 23 parts of nitrile rubber, 25 parts of water, 6 parts of acid coagulation liquid, 5 parts of a release agent, 6 parts of a stabilizer, 8 parts of a defoaming agent, 5 parts of an anti-aging agent and 2 parts of a coloring agent.
The method comprises the following steps:
s1: preparing raw materials, namely preparing the raw materials into latex;
s2: washing the mould, namely washing the mould of the medical latex glove;
s3: drying the mould, namely drying the cleaned mould at the temperature of 80 ℃;
s4: soaking latex, namely soaking the dried mould in latex solution of the medical latex glove to enable the surface of the ceramic mould to be covered with a layer of latex to form the latex glove;
s5: dipping acid coagulation liquid, vertically inserting the latex gloves dipped with latex into the acid coagulation liquid, wherein the acid coagulation liquid is prepared by putting formic acid, acrylic acid, hypochlorous acid and a dispersing agent into a stirrer for stirring, the rotating speed of the stirrer is 270 r/min, stirring is carried out for 40 minutes, simultaneously, water can be added for diluting according to needs, and the latex gloves need to be repeatedly and vertically put into an acid coagulation liquid pool, so that the acid coagulation liquid is uniformly attached to the unformed latex gloves;
s6: crimping, namely crimping the opening of the latex glove formed on the die in the step S5 by a crimping device;
s7: drying and vulcanizing, wherein the specific temperature of the drying and vulcanizing treatment is 200 ℃, and the pressure is controlled to be 15 MPa;
s8: water cooling, namely soaking the latex gloves obtained in the step S9 in cold water to cool, wherein the water cooling temperature is 20 ℃, and water can be replaced by disinfectant or soapy water;
s9: drying, namely drying the latex gloves cooled by water in the step S7 to remove surface moisture at the temperature of 60 ℃;
s10: and (4) demolding, namely taking the latex gloves off the ceramic mold, and then packaging to finish the production of the medical latex gloves.
Example two
The embodiment provides an acid coagulation preparation method of medical latex gloves, which comprises the following raw materials in parts by weight: 30 parts of nitrile rubber, 25 parts of water, 6 parts of acid coagulation liquid, 6 parts of a release agent, 5 parts of a stabilizer, 8 parts of a defoaming agent, 6 parts of an anti-aging agent and 2 parts of a coloring agent.
The method comprises the following steps:
s1: preparing raw materials, namely preparing the raw materials into latex;
s2: washing the mould, namely washing the mould of the medical latex glove;
s3: drying the mould, namely drying the cleaned mould at the temperature of 90 ℃;
s4: soaking latex, namely soaking the dried mould in latex solution of the medical latex glove to enable the surface of the ceramic mould to be covered with a layer of latex to form the latex glove;
s5: dipping acid coagulation liquid, vertically inserting the latex gloves dipped with latex into the acid coagulation liquid, wherein the acid coagulation liquid is prepared by putting formic acid, acrylic acid, hypochlorous acid and a dispersing agent into a stirrer for stirring, the rotating speed of the stirrer is 270 revolutions per minute, stirring is carried out for 30 minutes, simultaneously, water can be added for diluting according to needs, and the latex gloves need to be repeatedly and vertically put into an acid coagulation liquid pool, so that the acid coagulation liquid is uniformly attached to the unformed latex gloves;
s6: crimping, namely crimping the opening of the latex glove formed on the die in the step S5 by a crimping device;
s7: drying and vulcanizing, wherein the specific temperature of the drying and vulcanizing treatment is 200 ℃, and the pressure is controlled to be 15 MPa;
s8: water cooling, namely soaking the latex gloves obtained in the step S9 in cold water to cool, wherein the water cooling temperature is 18-25 ℃, and water can be replaced by disinfectant or soapy water;
s9: drying, namely drying the latex gloves cooled by water in the step S7 to remove surface moisture at the temperature of 60 ℃;
s10: and (4) demolding, namely taking the latex gloves off the ceramic mold, and then packaging to finish the production of the medical latex gloves.
EXAMPLE III
The embodiment provides an acid coagulation preparation method of medical latex gloves, which comprises the following raw materials in parts by weight: 30 parts of nitrile rubber, 25 parts of water, 6 parts of acid coagulation liquid, 6 parts of a release agent, 8 parts of a stabilizer, 7 parts of a defoaming agent, 6 parts of an anti-aging agent and 2 parts of a coloring agent.
The method comprises the following steps:
s1: preparing raw materials, namely preparing the raw materials into latex;
s2: washing the mould, namely washing the mould of the medical latex glove;
s3: drying the mould, namely drying the cleaned mould at the temperature of 75 ℃;
s4: soaking latex, namely soaking the dried mould in latex solution of the medical latex glove to enable the surface of the ceramic mould to be covered with a layer of latex to form the latex glove;
s5: dipping acid coagulation liquid, vertically inserting the latex gloves dipped with latex into the acid coagulation liquid, wherein the acid coagulation liquid is prepared by putting formic acid, acrylic acid, hypochlorous acid and a dispersing agent into a stirrer for stirring, the rotating speed of the stirrer is 240 revolutions per minute, stirring is carried out for 35 minutes, simultaneously, water can be added for diluting according to needs, and the latex gloves need to be repeatedly and vertically put into an acid coagulation liquid pool, so that the acid coagulation liquid is uniformly attached to the unformed latex gloves;
s6: crimping, namely crimping the opening of the latex glove formed on the die in the step S5 by a crimping device;
s7: drying and vulcanizing, wherein the specific temperature of the drying and vulcanizing treatment is 230 ℃, and the pressure is controlled to be 18 MPa;
s8: water cooling, namely soaking the latex gloves obtained in the step S9 in cold water to cool, wherein the water cooling temperature is 18-25 ℃, and water can be replaced by disinfectant or soapy water;
s9: drying, namely drying the latex gloves cooled by water in the step S7 to remove surface moisture at the temperature of 60 ℃;
s10: and (4) demolding, namely taking the latex gloves off the ceramic mold, and then packaging to finish the production of the medical latex gloves.
Example four
The embodiment provides an acid coagulation preparation method of medical latex gloves, which comprises the following raw materials in parts by weight: 38 parts of nitrile rubber, 26 parts of water, 4 parts of acid coagulation liquid, 6 parts of release agent, 8 parts of stabilizer, 4 parts of defoaming agent, 5 parts of anti-aging agent and 2 parts of coloring agent.
The method comprises the following steps:
s1: preparing raw materials, namely preparing the raw materials into latex;
s2: washing the mould, namely washing the mould of the medical latex glove;
s3: drying the mould, namely drying the cleaned mould at the temperature of 85 ℃;
s4: soaking latex, namely soaking the dried mould in latex solution of the medical latex glove to enable the surface of the ceramic mould to be covered with a layer of latex to form the latex glove;
s5: dipping acid coagulation liquid, vertically inserting the latex gloves dipped with latex into the acid coagulation liquid, wherein the acid coagulation liquid is prepared by putting formic acid, acrylic acid, hypochlorous acid and a dispersing agent into a stirrer for stirring, the rotating speed of the stirrer is 240 revolutions per minute, stirring is carried out for 36 minutes, simultaneously, water can be added for diluting according to needs, and the latex gloves need to be repeatedly and vertically put into an acid coagulation liquid pool, so that the acid coagulation liquid is uniformly attached to the unformed latex gloves;
s6: crimping, namely crimping the opening of the latex glove formed on the die in the step S5 by a crimping device;
s7: drying and vulcanizing, wherein the specific temperature of the drying and vulcanizing treatment is 190 ℃, and the pressure is controlled to be 15 MPa;
s8: water cooling, namely soaking the latex gloves obtained in the step S9 in cold water to cool, wherein the water cooling temperature is 18-25 ℃, and water can be replaced by disinfectant or soapy water;
s9: drying, namely drying the latex gloves cooled by water in the step S7 to remove surface moisture at the temperature of 60 ℃;
s10: and (4) demolding, namely taking the latex gloves off the ceramic mold, and then packaging to finish the production of the medical latex gloves.
EXAMPLE five
The embodiment provides an acid coagulation preparation method of medical latex gloves, which comprises the following raw materials in parts by weight: 30 parts of nitrile rubber, 25 parts of water, 6 parts of acid coagulation liquid, 6 parts of a release agent, 5 parts of a stabilizer, 8 parts of a defoaming agent, 6 parts of an anti-aging agent and 2 parts of a coloring agent.
The method comprises the following steps:
s1: preparing raw materials, namely preparing the raw materials into latex;
s2: washing the mould, namely washing the mould of the medical latex glove;
s3: drying the mould, namely drying the cleaned mould at the temperature of 95 ℃;
s4: soaking latex, namely soaking the dried mould in latex solution of the medical latex glove to enable the surface of the ceramic mould to be covered with a layer of latex to form the latex glove;
s5: dipping acid coagulation liquid, vertically inserting the latex gloves dipped with latex into the acid coagulation liquid, wherein the acid coagulation liquid is prepared by putting formic acid, acrylic acid, hypochlorous acid and a dispersing agent into a stirrer for stirring, the rotating speed of the stirrer is 280 revolutions per minute, stirring is carried out for 50 minutes, simultaneously, water can be added for diluting according to needs, and the latex gloves need to be repeatedly and vertically put into an acid coagulation liquid pool, so that the acid coagulation liquid is uniformly attached to the unformed latex gloves;
s6: crimping, namely crimping the opening of the latex glove formed on the die in the step S5 by a crimping device;
s7: drying and vulcanizing, wherein the specific temperature of the drying and vulcanizing treatment is 200 ℃, and the pressure is controlled to be 15 MPa;
s8: water cooling, namely soaking the latex gloves obtained in the step S9 in cold water to cool, wherein the water cooling temperature is 18-25 ℃, and water can be replaced by disinfectant or soapy water;
s9: drying, namely drying the latex gloves cooled by water in the step S7 to remove surface moisture at the temperature of 60 ℃;
s10: and (4) demolding, namely taking the latex gloves off the ceramic mold, and then packaging to finish the production of the medical latex gloves.
Comparing conventional latex gloves with latex gloves prepared in examples one to five, the following table was prepared for examples one to five:
as can be seen from the above table, the acid coagulation preparation method for medical latex gloves according to the present invention is significantly improved, and the fourth embodiment is the best embodiment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The acid coagulation preparation method of the medical latex gloves is characterized by comprising the following raw materials in parts by weight: 20-40 parts of nitrile rubber, 20-30 parts of water, 3-8 parts of acid coagulation liquid, 2-8 parts of a release agent, 4-9 parts of a stabilizer, 6-10 parts of a defoaming agent, 3-8 parts of an anti-aging agent and 1-3 parts of a coloring agent.
2. The acid coagulation preparation method of medical latex gloves according to claim 1, wherein the release agent is prepared from the following components in a ratio of 2-8: 3-7 of methyl silicone oil and siloxane compound, wherein the stabilizer is prepared by mixing 3-6: 1-5 organic antimony and lead salt.
3. The method for preparing acid coagulation of medical latex gloves according to claim 1, wherein the defoamer is a defoamer prepared from a mixture of 4-8: 3-6 of trialkyl melamine and cyanuric chloride melamine, wherein the anti-aging agent is prepared by mixing the following components in a ratio of 1-4: 3-6 diphenyl and p-phenylenediamine.
4. The method for preparing acid coagulation for medical latex gloves according to claim 1, wherein the ratio of the acid coagulation liquid is 3-10: 2-4: 4-8: 1-3 of formic acid, acrylic acid, hypochlorous acid and a dispersing agent.
5. The method for preparing acid coagulation of medical latex gloves according to claim 4, wherein the proportion of the dispersant is 2-4: 1-3 stearamide and higher alcohol.
6. The method for preparing acid coagulation latex gloves for medical use according to claim 1, comprising the steps of:
s1: preparing raw materials, namely preparing the raw materials into latex;
s2: washing the mould, namely washing the mould of the medical latex glove;
s3: drying the mould, namely drying the cleaned mould at the temperature of 70-100 ℃;
s4: soaking latex, namely soaking the dried mould in latex solution of the medical latex glove to enable the surface of the ceramic mould to be covered with a layer of latex to form the latex glove;
s5: dipping the acid coagulation liquid, vertically inserting the latex gloves dipped with the latex into the acid coagulation liquid;
s6: crimping, namely crimping the opening of the latex glove formed on the die in the step S5 by a crimping device;
s7: drying and vulcanizing;
s8: water cooling, namely soaking the latex gloves obtained in the step S9 in cold water for cooling;
s9: drying, namely drying the latex gloves cooled by water in the step S7 to remove surface moisture at the temperature of 50-80 ℃;
s10: and (4) demolding, namely taking the latex gloves off the ceramic mold, and then packaging to finish the production of the medical latex gloves.
7. The method as claimed in claim 1, wherein the step S5 is carried out by stirring formic acid, acrylic acid, hypochlorous acid and dispersant in a stirrer at a rotation speed of 230-300 rpm for 20-60 min, and diluting with water if necessary.
8. The method of claim 1, wherein the acid coagulation of the latex gloves during the step S5 is performed by repeatedly and vertically feeding the latex gloves into the acid coagulation bath to make the acid coagulation liquid uniformly adhere to the unformed latex gloves.
9. The method as claimed in claim 1, wherein the drying and vulcanizing temperature in the step S7 is 180-250 ℃ and the pressure is 10-20 MPa.
10. The method as claimed in claim 1, wherein the water cooling in step S8 is at a temperature of 18-25 ℃, and the water can be replaced with disinfectant solution or soapy water.
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|---|---|---|---|---|
| CN104341540A (en) * | 2013-08-05 | 2015-02-11 | 海南大学 | Method for quickly solidifying natural latex |
| CN108623858A (en) * | 2018-05-17 | 2018-10-09 | 合肥科天水性科技有限责任公司 | A kind of acid cure polymerizing preparation method of medical gloves |
| CN112480502A (en) * | 2020-11-27 | 2021-03-12 | 仙桃市松青塑料制品有限公司 | Processing technology of disposable gloves |
| US20210169160A1 (en) * | 2018-01-10 | 2021-06-10 | Top Glove International Sdn. Bhd | Semi transparent nitrile glove |
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2021
- 2021-11-15 CN CN202111347247.7A patent/CN114031697A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104341540A (en) * | 2013-08-05 | 2015-02-11 | 海南大学 | Method for quickly solidifying natural latex |
| US20210169160A1 (en) * | 2018-01-10 | 2021-06-10 | Top Glove International Sdn. Bhd | Semi transparent nitrile glove |
| CN108623858A (en) * | 2018-05-17 | 2018-10-09 | 合肥科天水性科技有限责任公司 | A kind of acid cure polymerizing preparation method of medical gloves |
| CN112480502A (en) * | 2020-11-27 | 2021-03-12 | 仙桃市松青塑料制品有限公司 | Processing technology of disposable gloves |
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